US20030103638A1 - Single chip device for voice communications - Google Patents
Single chip device for voice communications Download PDFInfo
- Publication number
- US20030103638A1 US20030103638A1 US10/004,572 US457201A US2003103638A1 US 20030103638 A1 US20030103638 A1 US 20030103638A1 US 457201 A US457201 A US 457201A US 2003103638 A1 US2003103638 A1 US 2003103638A1
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- United States
- Prior art keywords
- chip
- pattern
- microphone
- sensor
- bone conduction
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N39/00—Integrated devices, or assemblies of multiple devices, comprising at least one piezoelectric, electrostrictive or magnetostrictive element covered by groups H10N30/00 – H10N35/00
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/13—Hearing devices using bone conduction transducers
Definitions
- This invention relates to a single chip device for voice communications.
- this invention relates to a single chip device for voice communications having both a microphone sensor and an accelerometer on the same chip.
- Another object of the present invention is to provide a single chip having both an accelerometer and a microphone.
- Yet another object of the present invention is to provide a single chip that is also capable of signal conditioning.
- a further object of the present invention is to provide a single chip that is capable of manufacturing in large quantities and at low cost.
- a further object of the present invention is to provide a bone conduction sensor and microphone sensor that are small in size.
- Yet another object of the present invention is to provide a bone conduction sensor and microphone sensor that require low power.
- the present invention is a chip for use in a voice communication device.
- the chip includes a bone conduction sensing pattern disposed within the chip and a microphone sensing pattern disposed within the chip. Further the chip can include an integrated circuit portion interconnected to the bone conduction sensing pattern and microphone sensing pattern. This integrated circuit portion can include signal conditioning and/or other circuitry.
- the bone conduction sensing pattern is positioned at an opposite end of the chip as the microphone sensing pattern.
- the patterns of the chip can be of piezoelectric polymers that overlay a substrate.
- the present invention provides a single chip with both an accelerometer that can be used as a bone conduction sensor and a microphone sensor, the present invention is adapted for use in a voice communication device which requires both bone conduction sensing and air conduction sensing. Because these devices are placed in the same chip, advantages gained include both low power and reduced size. Further, because the accelerometer and microphone are on the same chip, the resulting device provides for improved differential sensing between that which is sensed by the vibration sensing accelerometer and that which is sensed by the air conduction sensing microphone. This is particularly important in use in a voice communication device which combines or processes both signals from accelerometer as well as signals from the microphone.
- FIG. 1 is a diagram of the chip of the present invention showing the polymer layers overlaying the substrate.
- FIG. 2 is a diagram of the chip of the present invention showing both a microphone sensor pattern and a bone conduction sensor pattern.
- FIG. 3 is a block diagram of the chip according to the present invention showing an accelerometer portion, a signal conditioning portion, and a microphone portion.
- FIG. 4 is a pictorial representation of an earpiece according to the present invention, earpiece having a chip with both a microphone sensor portion and a bone conduction sensor portion.
- FIG. 1 shows a chip 10 according to the present invention.
- the chip 10 of the present invention includes a substrate 12 .
- the substrate 12 may be silicon, ceramic, or other substrates such as may be known in the art.
- Overlaying the substrate 12 is a polymer layer 14 .
- the polymer layer 14 may include a first portion 14 A and a second portion 14 B.
- the first portion 14 A may be located on an opposite end of the chip 10 as the second portion of the polymer layer 14 B.
- the polymer is preferably a piezoelectric polymer.
- the polymer portion 14 A is patterned to form an air conduction sensor or microphone sensor.
- the polymer portion 14 B is combined with an inertial mass 16 to provide an accelerometer or bone conduction sensing portion.
- the circuit portion 18 is constructed according to known manufacturing processes and techniques.
- the circuit portion 18 can provide signal conditioning circuitry as well as other circuitry.
- the circuit portion 18 can include one or more field effect transistors (FETs), operational amplifiers, or low current digital logic.
- FETs field effect transistors
- operational amplifiers or low current digital logic.
- FIG. 2 provides a diagram showing the patterns used for the microphone sensor portion and the accelerometer sensor portion.
- the patterns used are merely representative. The present invention contemplates that any number of patterns can be used depending upon the particular application or environment and upon the specific design considerations or constraints that apply.
- the chip 20 includes the substrate 12 , the piezoelectric polymer patterns 20 and 22 overlying the substrate 12 .
- the piezoelectric polymer pattern 20 is that of a microphone element.
- the piezoelectric pattern 22 is that of an accelerometer, vibration sensor, or bone conduction sensor. Also shown are the terminals 24 for mechanical and/or electrical connection to the rest of an electronic circuit.
- FIG. 3 provides a block diagram according to the present invention.
- the chip 30 shown in FIG. 3 includes an accelerometer portion 32 , microphone portion 34 , and a signal conditioning portion 36 .
- the accelerometer portion 32 is electrically connected to the signal conditioning portion 36 .
- the microphone portion 34 is electrically connected to the signal conditioning portion 36 .
- the signal conditioning portion 36 is electrically connected to a plurality of connections 24 .
- the electrical connections 24 can be pin connections, pads, or other types of terminals adapted for mechanical and/or electrical connection.
- FIG. 4 shows a pictorial representation of an earpiece 40 of the present invention.
- the earpiece 40 contains a chip having both a microphone sensor portion and a vibration sensing portion. This allows the earpiece 40 to be small in size while still containing both a bone conduction sensing portion and an air conduction sensing portion. As both the bone conduction sensing portion and ear conduction sensing portion are a part of the same chip, only low power requirements are needed. Further, as the bone conduction sensor and the air conduction sensor are positioned on the same chip, any noise experienced by one of the sensors is more likely to be experienced by the other sensor so that processing of the received sound signals can be improved as both the bone conduction sensor and the air conduction sensor are subjected to the same environmental variations. Thus when processing, when differences are obtained from that which is detected with the air conduction sensor, these differences are less likely to be affected by variations and noise between the two and more likely to merely cancel.
Abstract
Description
- This invention relates to a single chip device for voice communications. In particular, this invention relates to a single chip device for voice communications having both a microphone sensor and an accelerometer on the same chip.
- The method of combining microphone sensors with bone conduction sensors such as accelerometers has recently been recognized. In particular, U.S. Pat. No. 6,094,492 to Boesen discloses a bone conduction voice transmission apparatus and system having both a microphone sensor and a bone conduction sensor, that may be an accelerometer. In such a voice communications device, both the accelerometer and microphone sensor can be positioned in the external auditory canal of a user. In such an application, there is a need for both small size and low power.
- Generally, there have been efforts at reducing the size of accelerometers and microphone sensors. Such devices have been implemented separately as micro electronic mechanical systems. For example, U.S. Pat. No. 6,128,961 to Haronian discloses a microelectronic mechanics system (MEMS) with a deformation sensor. In addition, pressure sensors have been made as well as microphones and other devices.
- Despite these recent advances in the art, problems remain.
- Therefore, it is a primary object of the present invention to improve upon the state of the art.
- It is a further object of the present invention to provide a chip adapted for use in a voice communication earpiece.
- Another object of the present invention is to provide a single chip having both an accelerometer and a microphone.
- Yet another object of the present invention is to provide a single chip that is also capable of signal conditioning.
- A further object of the present invention is to provide a single chip that is capable of manufacturing in large quantities and at low cost.
- A further object of the present invention is to provide a bone conduction sensor and microphone sensor that are small in size.
- Yet another object of the present invention is to provide a bone conduction sensor and microphone sensor that require low power.
- These and other objects, features, or advantages of the present invention will become apparent from the specification and claims.
- The present invention is a chip for use in a voice communication device. The chip includes a bone conduction sensing pattern disposed within the chip and a microphone sensing pattern disposed within the chip. Further the chip can include an integrated circuit portion interconnected to the bone conduction sensing pattern and microphone sensing pattern. This integrated circuit portion can include signal conditioning and/or other circuitry. Preferably, the bone conduction sensing pattern is positioned at an opposite end of the chip as the microphone sensing pattern.
- The patterns of the chip can be of piezoelectric polymers that overlay a substrate.
- Because the present invention provides a single chip with both an accelerometer that can be used as a bone conduction sensor and a microphone sensor, the present invention is adapted for use in a voice communication device which requires both bone conduction sensing and air conduction sensing. Because these devices are placed in the same chip, advantages gained include both low power and reduced size. Further, because the accelerometer and microphone are on the same chip, the resulting device provides for improved differential sensing between that which is sensed by the vibration sensing accelerometer and that which is sensed by the air conduction sensing microphone. This is particularly important in use in a voice communication device which combines or processes both signals from accelerometer as well as signals from the microphone.
- FIG. 1 is a diagram of the chip of the present invention showing the polymer layers overlaying the substrate.
- FIG. 2 is a diagram of the chip of the present invention showing both a microphone sensor pattern and a bone conduction sensor pattern.
- FIG. 3 is a block diagram of the chip according to the present invention showing an accelerometer portion, a signal conditioning portion, and a microphone portion.
- FIG. 4 is a pictorial representation of an earpiece according to the present invention, earpiece having a chip with both a microphone sensor portion and a bone conduction sensor portion.
- FIG. 1 shows a
chip 10 according to the present invention. Thechip 10 of the present invention includes asubstrate 12. Thesubstrate 12 may be silicon, ceramic, or other substrates such as may be known in the art. Overlaying thesubstrate 12 is a polymer layer 14. The polymer layer 14 may include afirst portion 14A and asecond portion 14B. Thefirst portion 14A may be located on an opposite end of thechip 10 as the second portion of thepolymer layer 14B. The polymer is preferably a piezoelectric polymer. Thepolymer portion 14A is patterned to form an air conduction sensor or microphone sensor. Thepolymer portion 14B is combined with aninertial mass 16 to provide an accelerometer or bone conduction sensing portion. Between thepolymer portion 14A and thepolymer portion 14B is acircuit portion 18. Thecircuit portion 18 is constructed according to known manufacturing processes and techniques. Thecircuit portion 18 can provide signal conditioning circuitry as well as other circuitry. For example, thecircuit portion 18 can include one or more field effect transistors (FETs), operational amplifiers, or low current digital logic. - FIG. 2 provides a diagram showing the patterns used for the microphone sensor portion and the accelerometer sensor portion. The patterns used are merely representative. The present invention contemplates that any number of patterns can be used depending upon the particular application or environment and upon the specific design considerations or constraints that apply. The
chip 20 includes thesubstrate 12, thepiezoelectric polymer patterns substrate 12. Thepiezoelectric polymer pattern 20 is that of a microphone element. Thepiezoelectric pattern 22 is that of an accelerometer, vibration sensor, or bone conduction sensor. Also shown are theterminals 24 for mechanical and/or electrical connection to the rest of an electronic circuit. - FIG. 3 provides a block diagram according to the present invention. The
chip 30 shown in FIG. 3 includes anaccelerometer portion 32,microphone portion 34, and asignal conditioning portion 36. Theaccelerometer portion 32 is electrically connected to thesignal conditioning portion 36. Themicrophone portion 34 is electrically connected to thesignal conditioning portion 36. Thesignal conditioning portion 36 is electrically connected to a plurality ofconnections 24. Theelectrical connections 24 can be pin connections, pads, or other types of terminals adapted for mechanical and/or electrical connection. - FIG. 4 shows a pictorial representation of an
earpiece 40 of the present invention. Theearpiece 40 contains a chip having both a microphone sensor portion and a vibration sensing portion. This allows theearpiece 40 to be small in size while still containing both a bone conduction sensing portion and an air conduction sensing portion. As both the bone conduction sensing portion and ear conduction sensing portion are a part of the same chip, only low power requirements are needed. Further, as the bone conduction sensor and the air conduction sensor are positioned on the same chip, any noise experienced by one of the sensors is more likely to be experienced by the other sensor so that processing of the received sound signals can be improved as both the bone conduction sensor and the air conduction sensor are subjected to the same environmental variations. Thus when processing, when differences are obtained from that which is detected with the air conduction sensor, these differences are less likely to be affected by variations and noise between the two and more likely to merely cancel. - Thus, a single chip air conduction sensing and bone conduction sensing device has been disclosed. The present invention contemplates numerous variations in the placement of the sensors, the signal conditioning circuitry used, the pattern of the accelerometer, the pattern of the microphone sensor, the type of substrate, the type of piezoelectric layer, and other variations. It is not intended that the present invention be limited by the specific embodiments disclosed herein. The present invention should only be limited by the claims that follow.
Claims (8)
Priority Applications (1)
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US10/004,572 US6664713B2 (en) | 2001-12-04 | 2001-12-04 | Single chip device for voice communications |
Applications Claiming Priority (1)
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US10/004,572 US6664713B2 (en) | 2001-12-04 | 2001-12-04 | Single chip device for voice communications |
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US20030103638A1 true US20030103638A1 (en) | 2003-06-05 |
US6664713B2 US6664713B2 (en) | 2003-12-16 |
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US10/004,572 Expired - Fee Related US6664713B2 (en) | 2001-12-04 | 2001-12-04 | Single chip device for voice communications |
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